Listing is for one (1) Service Caster Series #20 swivel caster with a 3″ diameter by 1-1/4″ wide high temperature phenolic wheel and a bolt hole with total lock brake capable of supporting 300 lbs./caster.When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 roller bearing high temperature phenolic casters. The Service Caster Series #20 is ideal for bakery racks, light and medium duty material handling, carts, equipment, and shop projects. The zinc plated finish provides durability under any condition, and the high temp phenolic wheels- quieter than comparable steel wheels- have a high resistance to impact damage, providing protection for floors in commercial and industrial settings. The roller bearing is capable of carrying greater loads while also providing smoother rolling motion. It has a split outer race shell into which the roller assembly is inserted. Combination seal/thrust retainer washers protect the bearing from dirt, water, and chemicals. They also help absorb thrust friction (Note: roller bearing must be used with hardened spanner bushing or hardened shaft). This caster is ideal for use in high temperatures associated with baking, performing consistently in temperature ratings of 475°F continuous usage to 525°F intermittent usage. Not only are they resistant to water, oil, and grease, but because they are non-metallic, these wheels are spark proof, keeping you safely moving forward. Mounting options include top plate, bolt hole and standard and metric threaded stem sizes. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.